That's what fair competition is... what's the problem? If it becomes better than Steem, then people would rightly go to the thing that is better.
To compare with Justin is bizarre... your only similarity is that people will leave? In the same way, I could leave the hospital either because I'm recovered... or dead.
Yes, so those that have invested (either time or money) in steem will lose their investment. Which is the majority of people here.
No, they'd just take their money, exchange it to the other currency (or anything else), and copy over their content (which can be saved with the click of a button).
You don't hear people on Twitter lamenting that they can't transfer over all their wasted time and effort on Facebook. It's just a normal, healthy process
That is not comparable. What do you think starts happening when only a couple whales start selling their steem for the token of this new blockchain? The price per coin goes down, and probably quickly. It will be a similar situation to rats fleeing a sinking ship. The last ones off get nothing.